While internal hardware varies, most have an electronic visual display, either backlit LCD or OLED or Hologram.[4] Some use transflective or electronic paper, to consume less power. Most have a rechargeable battery. Peripheral devices may include digital cameras, thermometers, accelerometers, pedometers, heart rate monitors, altimeters, barometers, compasses, GPS receivers, tiny speakers, and SD cards, which are recognized as storage devices by many other kinds of computers.
Like previous Gear watches, the Gear Sport uses a rotating bezel and two side buttons for most of its navigation. This works better than you’d think by looking at it, and it’s a boon to those who wear gloves for part of the year. In fact, we actually prefer this approach to Wear OS or the Apple Watch: Rotating through your home screens, notifications, lists of apps, or messages happens at remarkable speed for a tiny device. The screen is 1.2 inches and 360 pixels in diameter, but it’s brighter than our pick’s, and it looks decent enough while displaying most content, though text isn’t as sharp as on the Fossil screens. The watch itself is not small, at 43 and 44 millimeters wide and tall, respectively, and 11.6 mm thick, but it’s nowhere near as beefy as our prior pick, the Gear S3.
I go for a middle-of-the-road approach—I enable alerts for most of my installed apps, save for ones that are niche (mostly shopping apps that alert me to coupons) or ones I don't use regularly. All alerts make the Charge 3 vibrate and show the message on its screen, and all past alerts live in the notification drawer that you can access by swiping down from the top of the Charge 3's display.
It's also very bulky. Sitting at 46mm wide might not sound like much, but then you have the depth, and there's a lot of it here. In fact, if we had to pick one criticism of the Watch Sport it's that it crams so much in, it does so to its detriment. The size will be too overbearing for many, but the pay-off in size means that most of the great features of the Watch Sport have been discarded.
Google announced in late August a substantial new version of Wear OS, which should roll out to nearly every smartwatch running Android Wear 2.0 as of September 2018. The biggest changes are to the navigation of Wear OS’s homescreen, which means it could make these watches significantly easier to use. The updated UI will give you four primary places to go from your watch face: Swiping left gets you to the new Google Fit and its Heart Points and Move Minutes; swiping right brings you to a hopefully fast-loading, better-responding Google Assistant interface for asking questions or issuing commands; swipe up and you’ll see a long stream of all of your notifications, which you can interact with and respond to; swipe down, as with Wear 2.0, to access quick settings. Google told Engadget that the update focuses on reducing loading times and improving Assistant responsiveness, which addresses some of our major our misgivings about Wear OS. We’ll test this latest Wear OS and update this guide after we have a better sense of the changes.
Yes, it can monitor your health and fitness. You should choose one that has a pedometer to count your steps. An accelerometer is helpful in determining acceleration. Acceleration can be used to detect when you fall. A heart rate sensor can be used to monitor your heart beats. Some will report the amount of calories you consume and even display a report of your health at day’s end.

The Watch 2 comes in two varieties, Sports and Classic. The former is a little cheaper, looking unsurprisingly much like a standard sports watch. The Classic is noticeably more attractive, with a premium-looking shell and included leather band. If you’re after something that’s appropriate at a nice restaurant as well as the gym, you may want to pay the extra money, but all features are otherwise the same.

Why we like it: Compared with a smartwatch or fitness tracker, a dedicated GPS running watch is focused on one category of exercise: outdoor movement. GPS watches offer the fastest GPS signal lock-on and more-precise maps, while also showing up to the second details on your pace, heart rate, mile split times, and a host of other stats on an always-on display. The physical buttons on a GPS watch are easier to use while moving (and without looking), rather than having to swipe or tap on a tiny glass screen. A GPS watch’s longer battery life can better handle endurance events than a smartwatch. And the software and apps behind a good GPS watch provide more statistics and training programs to improve your efficiency. While GPS watches can show notifications, the weather, and a few other smartwatch-like conveniences, they’re much more limited in what can be done from a wrist than a smartwatch—or even a fitness tracker like the Vívosmart.
The Apple Watch Series 4 is now on sale, and it's the best smartwatch you can buy right now. The redesigned device, which starts at $399 for the GPS model and $499 for the cellular version, is the best smartwatch you can buy. It has a larger display and slightly bigger case size while retaining the same rounded square design the watch is known for. Even more importantly, Apple received FDA clearance for a new electrocardiogram feature that can take a 30-second EKG and diagnose atrial fibrillation.